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DEVELOPMENT OF AUTOMATIC TORQUE BOND TEST Hartadi Sutanto, Muslich
Jurnal Transportasi Vol 11, No 3 (2011)
Publisher : Jurnal Transportasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (285.886 KB)

Proper bonding between adjacent pavement layers is very important to ensure good pavement performance. Manual torque bond test is known to be one of the tests to determine mechanical properties of bond between adjacent pavement layers. However, the test has several drawbacks that may affect the accuracy of results. This paper is focused on the development a mechanically controlled automatic torque bond test in order to eradicate the drawbacks associated with the manual torque bond test. A trial test and calibration of the newlydeveloped apparatus was performed to ensure the accuracy of results. The nominal loading rate of the manual torque bond test performed at 600Nm/min was found to be lower than the target loading rate, leading to a lower measured shear strength compared to that of the automatic torque test. It was also found that the appearance of lateral shear would not significantly affect the shear strength.Keywords: bond test, torque, shear, loading rate.

DEVELOPMENT OF AUTOMATIC TORQUE BOND TEST Hartadi Sutanto, Muslich
Jurnal Transportasi Vol 11, No 3 (2011)
Publisher : Jurnal Transportasi

Proper bonding between adjacent pavement layers is very important to ensure good pavement performance. Manual torque bond test is known to be one of the tests to determine mechanical properties of bond between adjacent pavement layers. However, the test has several drawbacks that may affect the accuracy of results. This paper is focused on the development a mechanically controlled automatic torque bond test in order to eradicate the drawbacks associated with the manual torque bond test. A trial test and calibration of the newlydeveloped apparatus was performed to ensure the accuracy of results. The nominal loading rate of the manual torque bond test performed at 600Nm/min was found to be lower than the target loading rate, leading to a lower measured shear strength compared to that of the automatic torque test. It was also found that the appearance of lateral shear would not significantly affect the shear strength.Keywords: bond test, torque, shear, loading rate.

AGING AND RHEOLOGICAL PROPERTIES OF LATEX AND CRUMB RUBBER MODIFIED BITUMEN USING DYNAMIC SHEAR RHEOMETER Al-Sabaeei, Abdulnaser M; Mustofa, Bayu Agus; Sutanto, Muslich Hartadi; Sunarjono, Sri; Bala, Nura
Journal of Engineering and Technological Sciences Vol 52, No 3 (2020)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2020.52.3.6

Rubberized bitumen technology has been applied for a long time to enhance the performance of the asphalt pavement. In this research, the influence of natural rubber (NR) latex and crumb rubber (CR) on the conventional and rheological characteristics of 80/100 penetration grade bitumen before and after aging was compared. Conventional tests of penetration, ring and ball temperature, and ductility were conducted to evaluate the consistency of base bitumen and rubberized bitumen. A dynamic shear rheometer (DSR) test was carried out to evaluate the viscoelastic characteristics of the base and rubberized bitumen. The results showed that the addition of NR latex and CR reduced the penetration grade and increased the ring and ball temperature and ductility of the rubberized bitumen. This indicates that promising enhancement of the bitumen properties can be expected with the addition of NR latex and CR. The rheological properties analysis results showed that addition of CR up to 8% and NR latex up to 4% improved the complex modulus and rutting resistance of the rubberized bitumen compared to conventional bitumen. This indicates that the application of NR latex and CR in bitumen modification is expected to improve the durability of asphalt pavement.

DEVELOPMENT OF AUTOMATIC TORQUE BOND TEST Muslich Hartadi Sutanto
Jurnal Transportasi Vol. 11 No. 3 (2011)
Publisher : Forum Studi Transportasi antar Perguruan Tinggi (FSTPT)

Proper bonding between adjacent pavement layers is very important to ensure good pavement performance. Manual torque bond test is known to be one of the tests to determine mechanical properties of bond between adjacent pavement layers. However, the test has several drawbacks that may affect the accuracy of results. This paper is focused on the development a mechanically controlled automatic torque bond test in order to eradicate the drawbacks associated with the manual torque bond test. A trial test and calibration of the newlydeveloped apparatus was performed to ensure the accuracy of results. The nominal loading rate of the manual torque bond test performed at 600Nm/min was found to be lower than the target loading rate, leading to a lower measured shear strength compared to that of the automatic torque test. It was also found that the appearance of lateral shear would not significantly affect the shear strength.Keywords: bond test, torque, shear, loading rate.

Aging and Rheological Properties of Latex and Crumb Rubber Modified Bitumen Using Dynamic Shear Rheometer Abdulnaser M Al-Sabaeei; Bayu Agus Mustofa; Muslich Hartadi Sutanto; Sri Sunarjono; Nura Bala
Journal of Engineering and Technological Sciences Vol. 52 No. 3 (2020)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2020.52.3.6

Rubberized bitumen technology has been applied for a long time to enhance the performance of the asphalt pavement. In this research, the influence of natural rubber (NR) latex and crumb rubber (CR) on the conventional and rheological characteristics of 80/100 penetration grade bitumen before and after aging was compared. Conventional tests of penetration, ring and ball temperature, and ductility were conducted to evaluate the consistency of base bitumen and rubberized bitumen. A dynamic shear rheometer (DSR) test was carried out to evaluate the viscoelastic characteristics of the base and rubberized bitumen. The results showed that the addition of NR latex and CR reduced the penetration grade and increased the ring and ball temperature and ductility of the rubberized bitumen. This indicates that promising enhancement of the bitumen properties can be expected with the addition of NR latex and CR. The rheological properties analysis results showed that addition of CR up to 8% and NR latex up to 4% improved the complex modulus and rutting resistance of the rubberized bitumen compared to conventional bitumen. This indicates that the application of NR latex and CR in bitumen modification is expected to improve the durability of asphalt pavement.

Engineering Properties of Palm Oil Clinker Fine-Modified Asphaltic Concrete Mixtures Nura Shehu Aliyu Yaro; Madzlan Napiah; Muslich Hartadi Sutanto; Aliyu Usman; Intan Kumalasari Mizwar; Aliyu Mani Umar
Journal of Engineering and Technological Sciences Vol. 54 No. 2 (2022)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2022.54.2.5

Palm oil clinker (POC) is a non-biodegradable palm mill by-product typically discarded in dumpsites. This study analyzed the performance of POC powder (POCF) as bitumen modifier in terms of conventional and engineering properties of bitumen and asphalt mixture. For the study, base bitumen of 60/70 penetration grade was utilized and different POCF dosages (0, 2, 4, 6, and 8% by weight of bitumen) were added. The base bitumen was effectively modified with POCF and then characterized. The conventional and engineering properties of the modified bitumen and asphalt mixtures were assessed. From the characterization results, the formation of Si-O crystalline structure and a new Si-OH functional group was identified. Furthermore, a meandering pattern was observed due to the modification of the base bitumen with POCF. Based on the conventional test results it was revealed that the addition of POCF to the base bitumen resulted in a stiffer blend compared to unmodified bitumen. The addition of POCF improved the modified mixtures’ Marshall stability relative to the unmodified mixtures. Analysis of variance (ANOVA) and regression modeling showed the influence and significance of POCF-MB, with R2 values of (95-99%). Finally, the 4-6% POCF dosage was found to be the optimum dosage, yielding the best performance in terms of the engineering properties evaluated.

Analisis Perbandingan Algoritma Bisecting K-Means dan Fuzzy C-Means pada Data Pengguna Kartu Kredit Shinta Dwididanti; Dimas Aryo Anggoro; Muslich Hartadi Sutanto
Emitor: Jurnal Teknik Elektro Vol 22, No 2: September 2022
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/emitor.v22i2.15677

Di era digital seperti sekarang ini memiliki kartu kredit merupakan suatu hal yang wajar di masyarakat, dengan segala kemudahan yang ditawarkan dalam setiap transaksi pembayaran tidak menutup kemungkinan untuk menarik minat masyarakat dalam menggunakan kartu kredit. Dengan minat masyarakat yang tinggi terhadap kartu kredit, hal ini dapat dijadikan sebagai indikator yang baik bagi perusahaan kartu kredit untuk mengembangkan bisnis kartu kredit. Dalam rangka memenuhi kebutuhan konsumen akan kartu kredit, perusahaan dituntut untuk mengambil keputusan dalam menentukan strategi pemasaran yang tepat sehingga dapat menarik minat para pelanggan, salah satu caranya adalah dengan melakukan segmentasi pelanggan dengan metode clustering. Bisecting K-Means dan Fuzzy C-Means merupakan algoritma clustering yang akan digunakan pada penelitian ini untuk melakukan pengelompokan data pengguna kartu kredit. Analisis akan dilakukan untuk mengetahui algoritma dengan performa terbaik berdasarkan pengujian validitas dari kedua algoritma dengan menggunakan metode silhouette coefficient. Dari penelitian ini didapapatkan hasil bahwa Bisecting K-Means tanpa normalisasi memiliki nilai silhouette coefficient yang lebih tinggi dibandingkan dengan Fuzzy C-Means. Dimana nilai silhouette coefficient Bisecting K-Means sebesar 0.588 dan 0.579 dengan normalisasi, sedangkan nilai silhouette coefficient Fuzzy C-Means adalah 0.488 dan 0.582 dengan normalisasi.

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